BamaJohn66:
In '81 I installed a late 70's Cadillac 60/40 bench bottom/bucket back black leather electric seat in my '66, C-10. I ran a heavy gauge wire directly to the battery with an inline fuse for the controls. The ride height was correct and the pedal clearance very close to the factory distance. I don't remember the exact date, however I picked it up at a salvage yard for $50.00. I liked it because it had a fold down center section that served as an armrest, drink holder and extra storage, which is a premium in these trucks. It was also good because I installed two 5-1/4" round speakers in the metal panel above the fuel tank below the window. All in all, it was a good solution to my seat needs.
Best of lucks with your seat.
LILRD66
BCKBLK